CN102403148B - Press key structure and electronic device comprising same - Google Patents

Abstract

A press key structure comprises a supporting part, a press key switch, a key cap and an elastic part. The press key switch is arranged on the supporting part and provided with a trigger portion, the key cap is opposite to the trigger portion, the elastic part consists of a rotating portion and an elastic supporting portion, the rotating portion is rotatably connected with the key cap and the supporting part, the elastic supporting portion is non-coplanar connected with the rotating portion and abutted to the supporting part, the elastic supporting portion is abutted to the supporting part to elastically deform when the press key switch is not triggered, and accordingly, elastic restoring force is exerted to the rotating portion. The elastic supporting portion of the elastic part of the press key structure is abutted to the supporting part with a fixed part to elastically deform when the press key switch is not triggered, the elastic restoring force is exerted on the rotating portion of the elastic part, the key cap keeps close contact with the trigger portion of the press key switch, accordingly, a gap between the key cap and the trigger portion of the press key switch can be avoided, and a user has better hand feeling when pressing the press key structure. The invention further provides an electronic device comprising the press key structure.

Description

Button structure and electronic device with the button structure

technical field

The invention relates to a key structure, in particular to a key structure for electronic devices.

Background technique

The panel of the electronic device is often provided with a button structure for controlling the power switch or adjusting other functions. With the rapid development of the electronic industry, the requirements for the control accuracy of the buttons in the electronic device are getting higher and higher.

A button structure, which is arranged on the casing of the electronic device. The housing is provided with a receiving hole. The key structure includes a key cap and a key switch accommodated in the accommodating hole. There is a bump on the bottom of the keycap. The key switch has a trigger part and a fixed contact, and the trigger part is an arched shrapnel. The bump is against the top of the trigger part. When the key cap in the key structure is pressed, the protruding block presses down the triggering part to connect with the fixed contact; when the key cap is released, the triggering part resists the protruding block to reset the key cap.

However, in the above-mentioned key structure, due to manufacturing tolerances or assembly errors, it is easy to cause a certain gap between the protrusion of the key cap and the top of the trigger part in the untriggered state, thereby forming an empty stroke, resulting in the above-mentioned key structure. Feels poor.

Contents of the invention

In view of the foregoing, it is necessary to provide a button structure with a better feel when pressed and an electronic device having the button structure.

A button structure, which includes a support, a key switch provided on the support and having a trigger part, a keycap and an elastic part arranged opposite to the trigger part, and the elastic part is rotatably connected to the keycap and the support The rotating part and the elastic supporting part connected with the rotating part and against the supporting part, the two ends of the rotating part are respectively connected with the two ends of the elastic supporting part to form a roughly "concave" structure, and the The rotating part is not in the same plane as the elastic supporting part. When the key switch is not activated, the elastic supporting part is elastically deformed against the supporting member to provide an elastic restoring force to the rotating part.

An electronic device, which includes a casing and a button structure arranged on the casing, an accommodating hole is opened on the casing, the button structure includes a support fixedly connected with the casing, and is arranged on the support And there is a key switch with a trigger part, a keycap and an elastic part that are arranged relative to the trigger part and partially accommodated in the accommodating hole. The elastic support part connected and opposed to the support member, the two ends of the rotating part are respectively connected with the two ends of the elastic supporting part to form a roughly "concave" structure, and the rotating part and the elastic supporting part are not co-planar, the elastic supporting part is elastically deformed against the supporting part when the key switch is not triggered, so as to provide an elastic restoring force on the rotating part.

The elastic supporting part of the elastic part of the above-mentioned button structure is elastically deformed when the key switch is not triggered, and the supporting part of the fixed part is resisted, and an elastic restoring force is provided on the rotating part of the elastic part, so that the keycap remains in contact with the key switch. The triggering part of the key is in close contact, thereby avoiding a gap between the keycap and the triggering part of the key switch, so that the pressing of the above-mentioned key structure has a better hand feeling.

Description of drawings

FIG. 1 is a partial perspective view of an electronic device according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view of the electronic device shown in FIG. 1 .

FIG. 3 is an assembly diagram of the key structure of the electronic device shown in FIG. 1 .

FIG. 4 is an assembly diagram of the key structure of the electronic device shown in FIG. 3 without the keycap.

Description of main component symbols

electronic device 100 case 101 Accommodating hole 102 key structure 103 keycap 10 pressing part 11

limit part 13 Connection 15 shaft hole 151 gap 152 fixed bracket 20 first fixed part twenty one second fixed part twenty three The third fixed part 25 supporting item 30 ontology 31 through hole 312 Support 32 button 50 Trigger 51 Elastic 60 Rotating part 61 elastic support 62 Fastener 70 fixed part 71 first hook 72 Second hook 73

Detailed ways

The key structure of the present invention and the electronic device having the key structure will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

Please refer to FIG. 1 and FIG. 2 , the electronic device 100 includes various functional modules for realizing various corresponding functions. However, in order to save space, this embodiment focuses on the housing 101 of the electronic device 100 and the housing 101 fixed on the housing. Key structure 103 on 101. Specifically, in this embodiment, the button structure 103 is a menu button of the electronic device 100 , and the casing 101 is a casing of the electronic device. The housing 101 defines a receiving hole 102 .

The button structure 103 includes a keycap 10 , a fixing bracket 20 , a support member 30 , a key switch 50 , an elastic member 60 and a fixing member 70 . The keycap 10 is partially accommodated in the accommodation hole 102 of the casing 101 . The fixing bracket 20 is fixed on the inner surface of the housing 101 and is disposed close to the receiving hole 102 . The supporting member 30 is fixedly connected with the fixing bracket 20 and is disposed opposite to the receiving hole 102 . The key switch 50 is fixed on the supporting member 30 . The elastic member 60 is rotatably connected with the keycap 10 and the fixing member 70 . The fixing piece is fixedly connected with the supporting piece 30 .

The keycap 10 includes a pressing portion 11 , a limiting portion 13 and two connecting portions 15 . The pressing portion 11 is substantially elongated and elliptical, and can slide in the accommodating hole 102 of the housing 101 . The limiting portion 13 is disposed on one side of the pressing portion 11 . The size of the limiting portion 13 is larger than the size of the accommodating hole 102 of the housing 101 to prevent the pressing portion 11 from falling out of the accommodating hole 102 . The two connecting portions 15 are respectively disposed on two ends of the outer surface of the limiting portion 13 . In this embodiment, each connecting portion 15 defines a shaft hole 151 and a notch 152 communicating with the shaft hole 151 .

The fixing bracket 20 includes a first fixing portion 21 , two second fixing portions 23 and a third fixing portion 25 . The first fixing portion 21 is a rectangular plate, which is fixed inside the housing 101 . The two second fixing parts 23 are respectively bent and extended from two ends on one side of the first fixing part 21 . Both ends of the third fixing portion 25 are respectively connected to the two second fixing portions 23 . The first fixing part 21 , the two second fixing parts 23 and the third fixing part 25 jointly form an annular frame. In this embodiment, the first fixing portion 21 is fixed on the inner side of the housing 101 by welding. The third fixing portion 25 is used for fixing and connecting other components (not shown) of the electronic device 100 .

The supporting member 30 includes a main body 31 and a supporting portion 32 disposed in the middle of one side of the main body 31 . Two through holes 312 are respectively defined at two ends of the body 31 . The main body 31 is fixed on the second fixing portion 23 of the fixing bracket 20 through the through hole 312 through the screw (not shown).

The key switch 50 is fixed on the support portion 32 of the support member 30 (see FIG. 4 ). The key switch 50 has a trigger portion 51 . The limiting portion 13 of the keycap 10 presses against the triggering portion 51 to trigger the key switch 50 . In this embodiment, the key switch 50 is fixed on the support member 30 by welding.

The elastic member 60 includes a rotating portion 61 and an elastic supporting portion 62 connected to the rotating portion. Both the rotating part 61 and the elastic supporting part 62 are roughly U-shaped structures, and the two ends of the rotating part 61 are respectively connected with the two ends of the elastic supporting part 62 , and finally together form a substantially "concave" structure. The size of the rotating portion 61 is larger than that of the elastic supporting portion 62 , and the two are not coplanar, that is, the elastic supporting portion 62 is inclined relative to the rotating portion 61 . In this embodiment, the elastic member 60 is made of elastic steel wire.

The fixing member 70 includes a fixing portion 71 , and two first hooks 72 and second hooks 73 disposed on the fixing portion 71 . In this embodiment, the fixing member 70 is integrally formed of elastic material.

Please refer to FIGS. 2 to 4 at the same time. When assembling the button structure 103, first snap the middle part of the rotating part 61 of the elastic member 60 into the second hook 73 of the fixing member 70, and then snap the two sides of the rotating part 61 into the Inside the first hook 72 of the fixing member 70 . The two ends of the elastic member 60 are snapped into the shaft holes 151 through the notches 152 of the two connecting portions 15 of the keycap 10 , so that the elastic member 60 can rotate relative to the keycap 10 . The pressing portion 11 of the keycap 10 is accommodated in the accommodation hole 102 of the casing 101 . The first fixing portion 21 of the fixing bracket 20 is fixed inside the casing 101 . Both ends of the main body 31 of the support member 30 are fixedly connected to the two second fixing portions 23 of the fixing bracket 20 . The key switch 50 is fixed on one side of the supporting member 30 , and the fixing portion 71 of the fixing member 70 is fixed on the supporting member 30 . When the key switch 50 is not triggered, the rotating part of the elastic member 60 is equivalent to the rotation of the fixed member 70 by a certain angle, so that the elastic supporting part 62 is elastically deformed due to pressing against the supporting member 30, providing an elastic restoring force on the elastic The rotation part 61 of the member 60 is used, so that the limiting part 13 of the keycap 10 is in close contact with the trigger part 51 of the key switch 50 .

When using the key structure 103 , press the pressing portion 11 of the keycap 10 to slide the keycap 10 toward the triggering portion 51 of the key switch 50 until the key switch 50 is triggered. The elastic support portion 62 of the elastic member 60 is completely restored to deformation or the elastic variable is reduced. When the pressing part 11 of the keycap 10 is loosened, the trigger part 51 of the key switch 50 automatically resets and pushes up the keycap 10, so that the rotating part 61 of the elastic part 60 is equivalent to the fixed part 70 to rotate a certain angle, so that the elastic part 60 The elastic supporting portion 62 is deformed to provide an elastic torsion force to the rotating portion 61 of the elastic member 60 , thereby keeping the limiting portion 13 of the keycap 10 in close contact with the triggering portion 51 of the key switch 50 .

It should be noted that when the key switch 50 of the key structure 103 is not triggered, the elastic torsion force applied by the elastic member 60 to the keycap 10 is smaller than the pressing force required when the trigger part 51 of the key switch 50 is triggered, thereby preventing the key switch 50 from being misused. Touch, make key switch 50 can work normally.

The elastic support portion 62 of the elastic member 60 of the above-mentioned key structure 103 is elastically deformed when the key switch 50 is not triggered, butts against the support member 30 of the fixing member 70 , and provides an elastic restoring force to the rotating portion 61 of the elastic member 60 , keep the key cap 10 in close contact with the trigger portion 51 of the key switch 50, thereby avoiding a gap between the key cap 10 and the trigger portion 51 of the key switch 50, eliminating the empty stroke when pressing, and making the key structure 103 has a better feel.

It can be understood that the fixing bracket 20 can be omitted, and in this case, the supporting member 30 is directly fixed on the housing 101 . The fixing part 70 can also be omitted, as long as the rotating part 61 of the elastic part 60 is rotatably connected with the support part 30. Pass through the shaft hole.

In addition, those skilled in the art can also make other changes within the spirit of the present invention. Of course, these changes made according to the spirit of the present invention should be included in the scope of protection claimed by the present invention.

Claims (8)

1. A button structure, which comprises a support member, a key switch provided on the support member and having a trigger portion, and a keycap arranged relative to the trigger portion, characterized in that: the button structure also includes an elastic member, the elastic member It includes a rotating part that is rotatably connected to the keycap and the supporting part, and an elastic supporting part that is connected with the rotating part and resists the supporting part, and the two ends of the rotating part are respectively connected with the two ends of the elastic supporting part to A substantially "concave" structure is formed, and the rotating part is not coplanar with the elastic supporting part. When the key switch is not triggered, the elastic supporting part is elastically deformed against the supporting member to provide a The elastic restoring force acts on the rotating part. 2. The button structure according to claim 1, characterized in that: the keycap comprises a pressing portion and two connecting portions arranged on one side of the pressing portion, each connecting portion is provided with a shaft hole and is connected with the shaft hole There is a connected notch, and the two ends of the rotating part of the elastic member are snapped into the shaft hole through the notch. 3. The button structure according to claim 2, characterized in that: the button structure further comprises a fixing part fixed on the supporting part, and the fixing part is provided with a hook engaged with the rotating part, so that The rotating part is rotatable relative to the fixing part. 4. The button structure according to claim 1, characterized in that: the button structure further comprises a fixed bracket fixedly connected with the supporting member. 5. The button structure according to claim 4, characterized in that: the support member includes a body with two ends fixedly connected to the fixing bracket and a support part arranged in the middle of one side of the body, the key switch is fixed on the support department. 6. An electronic device, which comprises a housing and a button structure arranged on the housing, an accommodating hole is opened on the housing, the button structure includes a support fixedly connected to the housing, and is arranged on the support A key switch with a trigger part on a part and a key cap arranged relative to the trigger part and partially accommodated in the accommodating hole, characterized in that: the key structure also includes an elastic part, and the elastic part includes the key cap and the supporting part A rotatably connected rotating part and an elastic supporting part connected with the rotating part and abutted against the support member, the two ends of the rotating part are respectively connected with the two ends of the elastic supporting part to form a roughly "concave" structure , and the rotating portion is not coplanar with the elastic supporting portion, and the elastic supporting portion is elastically deformed against the supporting member when the key switch is not triggered, thereby providing an elastic restoring force on the rotating portion. 7. The electronic device according to claim 6, wherein the keycap comprises a pressing portion and two connecting portions disposed on one side of the pressing portion, each connecting portion is provided with a shaft hole and is connected with the shaft hole. There is a connected notch, and the two ends of the elastic member are snapped into the shaft hole through the notch. 8. The electronic device according to claim 7, wherein the button structure further comprises a fixing part fixed on the supporting part, and the fixing part is provided with a hook engaged with the rotating part, so that The rotating part is rotatable relative to the fixing part.

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